There's also this new kid in town: http://polycode.org/
You're right. It doesn't natively come with visual scripting but the plugins are why I suggested it. I just came across another engine that seems to be a decent alternative to Unity and is worth looking into since NPAPI is being dropped from the web in 2014. Check it out, it's called Goo Create/ Goo Engine and it's completely visual and browser based. http://www.gootechnologies.com/showcase/That's coming along quite nicely
man i would really like to build this but everything just is not enjoying the idea of cooperation today
won't build at all for me :(